Sunan An-Nasa'i

It was narrated that Hudhaifah said:""The Messenger of Allah [SAW] said: 'The Izar should come to the middle of the shins and the calf. If you insist, then a little lower, and if you insist, then a little further down, but the Izar has no right to (come to) the ankle."" This is the wordings of Muhammad